Question

Harvey can run 3 1/6 km in 1/4 hour. Harvey runs at a constant rate

What is his average speed

Answer 1

12 2/3 km/hour or 12.666 km/hour

Explanation:

Because 3 1/6 is the rate for every quarter hour, simply multiply that rate by 4 in order to get the average speed over the course of an hour.